This project will advance core understanding of maintenance and repair practices and connect these to long-standing concerns around the design, innovation, and sustainability of new computational tools and infrastructures. Technology maintenance and repair constitute central elements in the long-term impact and sustainability of computing tools and infrastructures. While there is tremendous need for understanding their effects on engineering development, maintenance and repair have been systematically underrepresented in human-computer research to date. By improving the design-repair nexus, this project seeks not only to study sustainability but also enhance it. Pedagogically, it develops new repair-centered teaching and learning strategies for education in engineering and the social sciences.